in the helper thread, separate the FILE * creation from the actual

function doing work on the socket. This is another generalization
to provide a generic mechanism to open TCP/TLS socket with a thread
managing the accpet and children threads managing the individual
sessions.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48067 65c4cc65-6c06-0410-ace0-fbb531ad65f3